This is a painful experience for me. I received this coin earlier this week. (Top photo is the seller's shot) As I took it out of the flip
it shipped in, a chunk of the patina
broke off (aaarrrrggggghhhh!). The coin is nearly 3mm thick with patina
accounting for about half the thickness. Under the patina
was revealed to be a core of metal that has a white dusty appearance. The second shot is how it currently looks and the last is a close up of the damage.
The rest of the coin is in good
shape (o cracks or chips). But the 'powdery' metal concerns me. How should his
coin be preserved (as opposed to conserved)? Should I worry about moisture in the air and further coin decomposition? Wax will not buff out imo and would be unsightly. Should I seal the exposed area
with polyeurathane or the like? Should I just live with it and do nothing?
Opinions please from the esteemed membership
. Thanks, Jon